Protractor with an auxiliary ruler



FIG. 1 is a front elevation of a protractor with an auxiliary ruler;

FIG. 2 is a left side elevation thereof;

FIG. 3 is a right side elevation thereof;

FIG. 4 is a bottom plane view thereof;

FIG. 5 is a top plane view thereof;

FIG. 6 is a rear elevation thereof; and,

FIG. 7 is a perspective view thereof;

FIG. 8 is another perspective view thereof, showing of the protractor with an auxiliary ruler when used for illustrative purpose; and,

FIG. 9 is the other perspective view thereof, showing of the protractor with an auxiliary ruler when used for illustrative purposes. 

The ornamental design for a protractor with an auxiliary ruler, as shown and described. 